求翻译：摘要:凹陷是在早中三迭世克拉通盆地委缩期后，经多期构造运动改造成的中新生代叠合盆地。上古生界(C-P)和中生界（T3、J1、2）为主要烃源层,多期构造、断块活动产生多期生烃和多个油气运聚成藏期，燕山中-喜山期二次生烃为主要的成藏期。断鼻、断块为主的构造面貌,交叉断层型断块为成藏主要圈闭类型。深部储层发育次生孔隙或构造裂隙带是成藏关键因素。晚期断裂活动沟通了多套成藏组合，形成了断层、断层岩性及古潜山等油气藏呈叠合分布的摸式。也成为油气藏形成保存的主控因素。独特的二次生烃作用造就了丰富的油、气资源，含气远景可观。勘探多年未获突破，说明须用新的地质理论和评价方法方可认识复杂叠合盆地多期成藏和保存等诸多难点。是什么意思？

Summary: depression is three iterations in craton basins prefectural shrinkage in early period, after multiple tectonic movement into the Cenozoic in superimposed basins. Upper Paleozoic (C-P) and the Mesozoic (T3, J1, 2) as the main source, many tectonic block activities produce much more oil and gas and hydrocarbon migration and accumulation period, Yanshan-Xishan of secondary hydrocarbon generation as the main reservoirs. Constructed mainly of a broken nose and broken block face crossing fault-block reservoir main trap types. Deep reservoir secondary pores or fracture zone is a key factor accumulation. Advanced communication fault activity a combination of several sets of forming, formation faults, and buried Hill reservoir of fault rock distribution-touch is superimposed. Also became a main control factors of hydrocarbon reservoir formation of save. Unique secondary hydrocarbon generation to create a rich oil and gas resources, void vision is considerable. Exploration over the years has not been a breakthrough, description with new side can understand complex geological theory and evaluation method of multi-phase accumulation of superimposed basins and save, and many other difficulties.